Pipe bevelling device



Dec. 23, 1958 5, J. PAULEY 2,865,625

PIPE BEVEZLLING DEVICE Filed July 3, 1957 INVENTOR SEBERI J. PAULEY ATTORNEY United States Patent PWE BEVELLING DEVICE Sebert J. Pauley, Dunbar, W. Va., assignor to Gustave Miller, Washington, D. C.

Application July 3, 1957, Serial No. 669,872

1 Claim. (Cl. 266-23) This invention relates to a bevelling device for pipes, and it particularly relates to a device for applying a cutting torch to the end of pipe lengths at predetermined angles.

There have been various types of pipe bevelling devices used heretofore. However, all these prior types have generally been extremely complex in structure and subject to easy breakage. They were, because of their complex structure, unduly expensive to manufacture and to maintain in repair, and diflicult to handle. In those few instances, on the other hand, where the devices were more simple in construction, they were too weak to stand up under heavy usage and were also not capable of providing an accurate cut.

It is one object of the present invention to overcome the above and other disadvantages by providing a bevelling device which is simple in construction, easy to handle and accurate in cut.

Another object of the present invention is to provide a bevelling device which is easily and accurately adjustable to accommodate pipes of various dimensions.

, Other objects of the present invention are to provide an improved bevelling device, of the character described,-

that is easily and economically produced, which is sturdy in construction, and which is highly efficient in operation.

With the above and related objects in view, this invention consists in the details of construction and combination of parts, as will be more fully understood from the following description, when read in conjunction with the accompanying drawing in which:

Fig. l is an exploded, perspective view of a device embodying the present invention.

Fig. 2 is a side view, partly in section and partly in elevation, of the device of Fig. 1, the device being shown in operative position within the bore of a pipe.

Fig. 3 is a sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is an enlarged, detailed side view, partly in elevation and partly in section, of the longitudinally adjustable mounting for supporting the torch.

Fig. 5 is a cross-sectional view taken on line 55 of Fig. 4.

Referring now in greater detail to the drawing wherein similar reference characters refer to similar parts, there is shown a bevelling device, generally designated 10, which comprises a block 12 having a threaded rod 14 extending through a threaded bore adjacent the free end of the block and a second threaded rod 16 extending through a threaded bore in the block which is perpendicular to the first bore and closer to the opposite end of the block. Each rod 14 and 16 is heldin position relative to the block by means of lock nuts, such as shown at 18 and 20 for rod 14 and 22 and 24 for rod 16. At each end of the two rods 14 and 16 is provided a hollow head having an internally threaded bore to receive the corresponding threaded ends of the corresponding rod; these heads being designated as 26, 28, 30 and 32 respectively. Each head is provided at one end with a polygonal nut portion, as at 34, 36, 38 and 40 respectively, and with a spherical socket,

2,865,625 Patented Dec. 23, 1958 as at 42, 44, 46 and 48 respectively, on the other end. Connected to each of these sockets as by a ball joint is a concave shoe designated respectively 50, 52, 54, and 56. These shoes may preferably be' constructed of steel or the like and may be covered with rubber. On the other hand, if desired, the entire shoe may be made of rubber or the like. The rubber, in either case serves to fric-. tionally engage with the interior of 'a tube or pipe such as indicated at 58, the end of which is to be bevelled. Each head 2632 is provided with a bridge member, as at 60, 62, 64 and 66 respectively, each bridge member having a ring portion, as at 68, 70, 72 and 74 respectively, which tached.

The block 12 is provided at one end with a socket to.

receive in rigid engagement therewith one end of a shaft.

'76; a collar 78 holding the shaft in the socket. The shaft is unthreaded for the major portion ofits length but, at that portion opposite to its connection with the block, the shaft is threaded, as at 80. This shaft-78 extends into and through a sleeve 82 which is internally threaded to engage with the threads 80 on the shaft. This sleeve 82 is mounted, at one end, in a centrally apertured plate 84, wherein a ball bearing assembly 86 surrounds the sleeve to permit free rotation of the sleeve in the plate. The opposite end of the sleeve 82 is provided with a knurled disc 88 by means of which the sleeve may be manually rotated on the shaft. 1

The plate 84 forms the front end of a mounting bracket 90 for the torch, the remainder of the bracket consisting of a pair of rods 92 and 94 connected, by welding or other suitable means, to the plate 84 at their front ends, and extending rearwardly parallel with the sleeve 82. The rod 2 is somewhat shorter thanthe rod 94 and is provided, at-its free end, with a hinge plate 96 consisting of two plate-sections connected by a hinge connection. One of the plate sections is attached to therod 94 and the other is attached to the underside of a base plate 98. The base plate 98 supports a housing 100. The housing is provided with side walls 102 and a front wall 104. The side walls 102 are provided with laterally-inwardly-extending flanges 106 at their upper edges; these flanges defining an open top. The front wall '104is centrally apertured to provide a threaded opening through which threadedly extends a threaded rod 108 having a manually actuatable knob 110 on its end. The oppositeend of the threaded rod is positioned in a socket 112 at one end of a slidable block 114 and is retained therein by a collar 116. On the upper surface of the block 114 are provided a pair of clamps 118 spaced from each other longitudinally of the block. The clamps project out from the open top of the housing in a position to releasably clamp a torch 120. It should be noted that the hinge plate 96 may be removed and a larger hinge plate, such. as indicated at 122, may be substituted to accommodate larger pipes. By the same arrangement, smaller hinge plates may be substituted to accommodate smaller pipes.

The other rod 94 is provided, at its free end, with a bracket 124 upon which is mounted a tubular spring housing 126 having an open top coverable by a cover lid 128.

The cover lid 128 is releasably locked in place by a set predetermined angle of bevel relative to the end of the pipe 58. When the angle is desired to be changed, the cover 128 is removed and a different set of springs is inserted to vary the differential pressure therebetwecn.

A gage device generally designated 140, to indicate the positioning of the device relative to the outside of the pipe, is connected to the device by a ring bearing 142 which surrounds the shaft 76 to permit relative movement therebetween. Extending upward from the ring bearing is a rod 144 having a socket 146 at its free end and perpendicular thereto. Positioned in this socket is one end of a rod 148; this rod 148 having a perpendicularly extending sleeve 150 at its other end. Slidable Within this sleeve 150 is a rod portion 152 integral at its upper end'with a perpendicular rod portion 154 which extends back in the direction of rod 148; The rod portion 154 is provided with a pair'ofindicating points 156 and 158v to provide for center alignment. The rod portion 152 is'calibrated, preferably in V inch calibrations, to indicate its adjustment relative to the sleeve 150. A setscrew 160 is'provided'in the sleeve 150 to hold the rod portion 152' in releasably adjusted position. The gage 140 is rotatable relative to the bevelling device by means of the ring bearing 142 to indicate the radius of the pipe; this radius being indicated by the calibrations on rod portion 152;

As is apparent from the above description, in the operation of the device, the shaft 76 and its associated parts are inserted into the mouth of the pipe and the heads 26-32 are adjusted so that their respective foot members 50-56 bear against the internal wall of the pipe with sufficient play provided by their ball joints during and after the adjustment. The. knob 88 is then manipulated to'bring the sleeve 82and its associated parts into the properposition. A fine adjustment is made by means of threaded rod 108 to bring the torch into proper positionand the springs in the housing 126 are positioned to provide the proper angular bias of the torch. The gage member is then set to indicate the radius of the pipe. The device is then ready to operate and the cutting action takes place by rotating the torch-holding assembly around the mouth of the pipe.

Although this invention has been described in considerable detail, such description is intended as being illustrative rather than limiting, since the invention may be variously embodied, and the scope of the invention is to be determined as claimed.

Having thus set forth and disclosed the nature of this invention, what is claimed is: V

In a device of the character described, in combination an elongated block, a threaded rod extending through said block in a direction transverse to the longitudinal arcs" thereof, a second threaded rod extending transversely through said block at right angles to said first mentioned rod, a threaded cap for each end of each rod, an outwardly concaved shoe swivelly mounted on the end of each cap, lock nuts on each rod on each side of said block permitting longitudinal adjustment of said rods and hence of said shoes, a third rod having smooth portion and a threaded end extending longitudinally from an end of said block, an internally threaded sleeve on the threaded end of said third rod, an elongated plate secured to said sleeve and rotatable on the smooth portion of said rod, a pair of rods, one secured at one end to each end of said plate extending parallel to said third rod and beyond said sleeve, 0. housing hingedly secured to the end of one of said rods, a tubular spring housing secured to the end of the other of said rods inclined toward the other end of said first mentioned housing, a piston in said spring housing, a piston rod secured to said piston and abutting said other end ofsaid first mentioned housing, replaceable spring means in said spring housing biasing said piston towards said other end of said first mentioned housing and cutting torch supporting means carried by said first mentioned housing, the smooth portion of said third rod carrying a ring bearing, a rod extending from said ring bearing perpendicular to said third rod, an additional rod secured to the end of said rod extending from said ring bearing, and parallel to said third rod, a collar carried by the end of said additional rod and perpendicular thereto, an L-shaped rod having one leg adjustably secured in said collar, the other leg of said L-shaped rod extending rearwardly parallel to said additional rod and adapted to extend over the outside of a pipe to be bevelled and indicating points carried by said other leg of said L-shaped rod.

References Cited in the file of'this patent UNITED STATES PATENTS 1,139,048 Messer May 11, 1915 2,054,925 Bucknam Sept. 25, 1936 2,224,242 Young Dec. 10, 1940 2,416,399 McKierman Feb. 25, 1947 2,510,083 Davis June 6, 1950 2,619,343 Guynn Nov. 25, 1952' 2,622,327 Halonen Dec. 23, 1952 2,687,880 Waterman Aug. 31, 1954 OTHER REFERENCES American Machinist, March 29, 1945, page 124 relied on. 

